Is IMX l1 or L2?

Could you please clarify for me if IMX operates as a Layer 1 or Layer 2 blockchain solution? Understanding the architecture of IMX is crucial in assessing its scalability, security, and potential for interoperability with other blockchain networks. Layer 1 blockchains are often seen as the foundational layer, while Layer 2 solutions are designed to enhance the performance and functionality of Layer 1 networks. Knowing IMX's classification would help me better evaluate its potential and suitability for various use cases.